Just that last time I went on it and I had to fill out loads of stuff and I didn't really see what was wrong with just using Paypal. I've bought over 400m on sythe now all via Paypal and nothing has ever gone wrong.
Well sellers prefer to use PA because it's next to impossible to charge back. Paypal is crap when it comes to seller support, especially for virtual goods. I'd sell you the gold if you used PA.